The new M4 appears to use the same 3 liter 6 as my 335is but puts out another 105 HP (425 vs. 320). Can anyone explain how the output is so much more? I'm not asking about suspension or brakes differences. Just the engine tune. And can you please spell out the differences instead of using...

I am an new owner of a 94 318is and I was wondering what the best way to gain more power from the engine. I feel as if my bmw is slow. This is my first bmw, however I do have access to a parts guy with any parts I would ever dream of. Hes got engines, trans.,and basically everything for cheap...

Hello fello BMW owners. i just recently got a 2010 BMW 335i. i replaced the stereo and did some appearance upgrades, but now its time for the engine. I was just reaching out to you fellow enthusiasts to see what yall recommend me doing to upgrade my performance. Thank you for your help:)

I've looked everywhere for modifications and haven't found much. I have a 2003 745Li Sport Package. After a few hours of browsing, I've found that there are no turbos for my vehicle, though there is a supercharger that I can buy for around $8k... Do you guys know of any modifications that will...

Does this mod actually deliver 30 hp, and if it does can someone explain how does it end up having more hp than a 330i. http://www.turnermotorsport.com/p-176947-n52-330-intake-manifold-software-upgrade-for-128i325i328i528iz4.aspx. Btw what was the ration for money to horsepower.

Hey guys, pretty new to the forums. So here's whats up, I have a 328i 1997 with 110k miles on it. im planning on adding a Nitrous kit by the end of November & i wanted some input from anyone with some experience with it on bmw motors? My friends own Nissans & Hondas/Acuras so their knowledge...

Greetings all! TL;DR - came to shop with no reverse, replaced the drum ONLY, now has several codes and goes into limp after trying for 3rd gear. Also replaced a rectangular section sealing ring with silicon because my boss and the customer have less knowledge than money they're willing to...

Hey guys i have an m v LSD unit with under 40k on it. It has brand new bearings on it! 160$ value free! Needed with all others for sale 320$ shipped in the US., 360$ outside. Please text 949 486 9065 anytime for pics and questions as long as your serious!!! By that i mean ready to purchase...

Hi I have recently bought myself a 2000 BMW 323i e46. Here is what I know about the car right now: -It has been lowered 2" on after market lowering springs -It has Eagle Eye headlights -A Pioneer GPS/Radio/DVD Player/I still don't even know... -A 15" kicker in the back So far those are the only...

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Hey Guys, I very recently have had the pleasure in owning a BMW. It's an e90 325i I got a sweet deal on. I want to improve engine performance. What are the most cost effective sub $500 mods that make the driving machine even more "ultimate." Members of the site have suggested an active...

So I'm looking to increase the hp on my 2006 530i. I've looked around at other forums etc. but I'm just not sure where to start. I'm on a budget that would not allow a supercharger to fit in... so I'm thinking a chip or exhaust or something? Then again I'm not very experienced so I'm not too...

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I have a 97 non vanos 540i and Im excited bc today I have just found some clean m60 heads complete fairly cheap. I know there are a couple guys running this set up in e30's so I searched for parts. I have heads,timing covers. I believe that bmwmech1 has this set up and from reading the posts...

Ok i haven't seen any posts about the pulley sets that are for sale all over the place that claim 12Hp gains. i have been considering them but since they are under-driven not quite sure what effect it will have on the alternator, power-steering, and the Water pump. curious to know if anyone out...

This is somewhat of a noob question....... But I havn't found an exact answer. How much does an Exhaust actually do? I have a 98 328i, and I am looking at getting an exhaust, but I HATE those exhaust systems that are way to loud and sound like crap, especially on bimmers!!!!!:mad...